文档介绍：本科毕业论文
聚乙二醇改性壳聚糖膜的制备及应用
PREPARATION AND APPLICATION OF POLYETHYLENE GLYCOL MODIFIED CHITOSAN FILMS
学院(部): 材料科学与工程学院
专业班级: 高分子材料与工程
学生姓名:
指导教师:
2011 年 06 月 03 日
聚乙二醇改性壳聚糖膜的制备及应用
摘要
本文利用挥发溶剂的方法合成壳聚糖-聚乙二醇共混膜,用自制过滤装置和分光光度计去对共混膜的透过率和透光性性能进行了检测,还就膜的水溶性和溶胀性进行研究。结果表明,单纯壳聚糖膜的亲水性比较差,而且壳聚糖膜性脆。与纯壳聚糖膜相比,聚乙二醇加入壳聚糖物理共混制得的膜,亲水性、水溶性以及透水性等性能有很好改善。虽然共混膜的这些性能与PEG量有很大关系,但是并不是PEG量加的越多越好。当PEG在共混膜所占比例超过30%,将不利于成膜,或者成膜效果很差。
关键词:壳聚糖、聚乙二醇、亲水性、水溶性、透水性
PREPARATION AND APPLICATION OF POLYETHYLENE GLYCOL MODIFIED CHITOSAN FILMS
ABSTRACT
In this study, chitosan- polyethylene glycol membrane was prepared by the method of volatilizing solvent. The performances of blend membranes were detected through photometer, colation equipment by home-made and method of water absorption. In result, pure chitosan membrane had a bad hydrophily and a bad limpness. When polyethylene glycol was mixed in chitosan, hydrophily water-solubility and water permeability of membranes can be improved. And, though chitosan-polyethylene glycol membranes transmittancy, hydrophily and water-solubility has a great connection with the quantity of polyethylene glycol, more quantities of polyethylene glycol did not e with improvement of these performances. When the ratio of PEG exceeded 30% in blending film, it is difficulty of preparing films, and prepared films had a bad performance.
KEYWORDS: chitosan, polyethylene glycol, hydrophily, water-solubility, water permeability
目录
摘要 I
ABSTRACT II
1 绪论 1
1
1
壳聚糖成膜优点 2
壳聚糖膜研究进展 3
聚乙二醇-壳聚糖膜 5
聚乙二醇作为改性剂的优势 5
聚乙二醇/壳聚糖膜的制备 7
7
聚乙二醇改性壳聚糖膜的研究进展 8
10
2 聚乙二醇改性壳聚糖膜实验 11
壳聚糖溶液的性质 11
聚乙二醇与壳聚糖共混膜的成膜方法 11
实验药品及设备 12
实验药品与规格 12
实验仪器及设备 12
壳聚糖-聚乙二醇共混膜的制备 12
膜的性能检测 13
透光性测试 13
亲水性测试 13
水溶性测试 13
透水性测试 13
结果与讨论 14
透光性的测定分析 14
亲水性的测定分析 15
透水性的测定分析 16
水溶性的测定分析 17
3聚乙二醇-壳聚糖共混膜的结论与展望 19
参考文献 20